| geode |
(mineralogy) a hollow rock or nodule with the cavity usually lined with crystals
출처: wordnet.princeton.edu/perl/webwn
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| geode |
Geode - A hollow or partly hollow, hard, globular body, usually from 2.5 to 30 cm or more in diameter found in certain limestone beds and, rarely, in some shale beds, characterized by a thin and sometimes incomplete outermost layer of chalcedony, by a cavity that is partly filled with a lining of inward-projecting crystals deposited from solution on the cavity walls, and by evidence of growth by expansion in the cavities of fossils or along fracture surfaces of the shells.
출처: csd.unl.edu/general/glossary-letter.asp
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| geode |
a hollow rock (usually spherical) with crystals lining the inside wall.
출처: www.ticat.com/Pages/terms.htm
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